42 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.52. 



and undulate on posterior, apex of ultimate tergite, first sternite 

 except small lateral spots, second except median longitudinal line, 

 triangular lateral spots on 3-6, which may or may not be comiected 

 by apical lines, coxae, trochanters except spot above, femora except 

 line on first and traces of line on second above, tarsi except all ulti- 

 mate segments, pale yellow, deeper in shade on the legs. 



The flagellum is ferruginous below, shading to yellowish on the 

 basal segments, and 3-6 bear inconspicuous specialized areas. The 

 second cubital cross vein is decidedly curved, so that the width of the 

 second cubital cell on the radial veins is much less than its width on 

 the cubitus. The middle femora below are dentate. The tibiae are 

 not dilated as mformosa and are provided on the anterior at the apex 

 with a short, stout spine. The middle metatarsi on the inner side are 

 curved and bear near the base a row of four stout spines, of which the 

 two in the middle are largest. The ultimate segment on all tarsi is 

 flat and black and on the anterior pair is greatly broadened, but the 

 claws are of the normal form. The second sternite bears near its 

 posterior margin a pair of short but conspicuous tubercles, and the 

 eighth lacks a discal spine; the ultimate tergite basally bears a num- 

 ber of short lateral stout spines. 



Female. — Black: Labrum, mandibles except tips, clypeus, scape, 

 first two flagellar segments below, frons except a pair of widely sepa- 

 rated points at base of clypeus and a large butterfly-shaped black spot 

 on the middle, which may be connected laterally with the black of 

 the vertex; large spot almost inclosing the anterior ocellus; broad 

 posterior orbits extended across the posterior edge of vertex; pro- 

 thorax except a broad anterior dorsal spot and a dusky line in front 

 of tubercles, tegulae, lateral lines, and a U-shaped discal mark that 

 may be narrowly interrupted at posterior middle on scutum, broad 

 transverse fascia on middle of scutellum, fascia on metonotum, 

 median segment entirely except a black fascia on anterior border, a 

 short black vertical line on posterior surface and rather broad black 

 bands bordering sutures on dorsum and posterior surface, pair of 

 large spots on mesopleurae of which the anterior one may be pro- 

 longed on the front border of the mesosternum to the ventral mid- 

 line, thence backward narrowly to spot in front of middle coxae, 

 metapleurae, all tergites (except a medial, rounded, black emargina- 

 tion on the first, a narrow anterior black margin somewhat broader 

 laterally and continuous with a small but deep black emargination on 

 either side the midline on the second, a somewhat broader anterior 

 black margin with broader, shallower emargination on either side the 

 midline on third, fourth, and fifth, and black lateral spots on sixth), 

 lateral spots on sternites 1-5, the posterior ones smallest, pair of spots 

 on apex of ultimate sternite, coxae except basal spots, trochanters 

 except spot above, femora except line above reduced on posterior 



